3-(6-methylhept-5-en-2-yl)cyclohex-2-en-1-one

2-乙烯基-2,6,6-三甲基四氢-2H-吡喃

4-氧代壬-1-醛

3-甲基-3-(4-甲基戊-3-烯基)环氧乙烷-2-羧酸乙酯

methyl 2-methyl-6-oxohept-2-enoate